| 摘要 |
Press for hot isostatic pressing with a system for rapid cooling of the pressed articles, said isostatic press comprising a pressure vessel (1, 13) in which a furnace chamber (4) is arranged, which is surrounded by a heat-insulating mantle (5) and a heat-insulating bottom plate (6), and a space (10) being formed between said heat-insulating mantle and the wall of the pressure vessel, and openings (12) in the heat-insulating mantle for communication of pressure medium between the furnace chamber and said space (10), said space (10) comprising means (11) for guiding a flow of pressure medium through said space. The heat-insulating mantle (5) is sealed at the top and provided with two openings (12, 17) at its lower part. A tube (9) surrounds the loading space in the furnace chamber, said tube having an opening in its upper part and being arranged so that a gap (16) is formed between the tube (9) and the heat-insulating mantle (5). A first pump means (7) is arranged for sucking pressure medium from said space (10) between the heat-insulating mantle and the pressure vessel wall. A second pump means (8) is arranged for mixing hot pressure medium from said gap (16) between the tube (9) and the heat-insulating mantle with pressure medium from said first pump means, said mixture being injected into the loading space and moved upwards therein. The coolant being recirculate through the furnace chamber (4) has a temperature which is only slightly lower than the temperature of the articles. |
